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The world's first waterproof, handheld, high-performance thermal night vision camera gives every mariner the power to see like never before. Now you can head out early and come home late without being blinded by marina lights. Whether you're on a yacht, recreational powerboat, or sailboat, you'll see clearly and will navigate more safely in total darkness. Thermal imager can be mounted on your boat or held in your hand. Instant-on action provides images when you need them. Fully submersible enclosure is built to last. Four rechargeable AA NiMH batteries provide 5 hours of continuous operation; camera can also operate on alkaline and Lithium ion AA batteries.

Bought it to use while underway at night in narrow areas. If you are in a closed helm, all,you will see is the glass. The model sent was 001 with zoom and video capture buttons but it cost another $1000 to enable these features with a software update. If you want them get model 003. Image is clear and will give you a clear view at night. This model does not have a low light camera so if there is weather, you are blind. Very good for spotting things in the water and providing situation awareness from an open cockpit. I would recommend for limited use in specifIc emergency situations.